S-91390A112 M4 x 6 mm DIN 916, ISO 4029 Set Screws

Key Features & Benefits at a Glance

• Superior holding power with Rockwell C45 hardness alloy steel construction, resisting wear and deformation under high stress
• Secure, tamper-resistant installation via 2 mm hex drive and headless design, ideal for confined spaces
• Reliable coarse thread engagement with M4 x 0.7 mm Class 5g6g threads, ensuring consistent clamping force and vibration resistance
• Enhanced grip and component protection from the cup tip design, minimizing surface damage during tightening
• Broad industrial compatibility by meeting DIN 916 and ISO 4029 specifications for dimensional accuracy
• Environmental and safety compliance with RoHS 3 and REACH regulations, safe for various applications
• Right-hand thread direction for standard, intuitive installation, reducing assembly errors

Professional Applications & Engineering Value

This M4 set screw is engineered to address critical challenges in precision assembly and machinery. The alloy steel material, hardened to Rockwell C45, provides exceptional shear and tensile strength, preventing failure in high-vibration environments like motor mounts or gearbox assemblies. The headless design and hex drive allow flush mounting in tight spaces, while the cup tip concentrates clamping force without marring shafts or collars. With coarse metric threads and Class 5g6g thread fit, it ensures quick, secure fastening in metals and engineered plastics, reducing loosening risks. Ideal for industrial applications requiring repeatable precision, such as robotics, automotive components, and conveyor systems, this screw delivers long-term reliability under dynamic loads.

Specification Summary & Compliance

This set screw adheres to DIN 916 and ISO 4029 standards, with M4 x 0.7 mm coarse threads manufactured to Class 5g6g tolerance for consistent fit. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring no restricted substances are present.